High intensity surgical light

ABSTRACT

A surgical light capable of being positioned in close proximity to an operating site. The light is made up of a high intensity bulb, a lens, a filter, and a lens holder, in combination with a cooling means for the high intensity light. A part of the light may be removed from sterilizing.

0 United States Patent 1 1 3,609,335

[72] Inventor Paul M. Kelly [56] References Cited Erie, UNITED STATES PATENTS 25;;- 212 5 1,985,922 1/1935 Gelb 240/14 a Patented Sept. 28,1971 3,107,863 10/1963 Potapenko 240/l.4 ['7 3] Assignee American Sterilizer Com a Primary Examiner- Donald 0. Woodie] Eric, Attorney-Charles L. Lovercheck [54] HIGH INTENSITY SURGICAL LIGHT 4 ABSTRACT: A surgical light capable of being positioned in [52] US. 240/ 1.4 close proximity to an operating site. The light is made up of a [51] Int. Cl A6lg 13/00 high intensity bulb, a lens, a filter, and a lens holder, in com- [50] Field of Search 240/ 1.4, l bination with a cooling means for the high intensity light. A

- E, 41.15 part of the light may be removed from sterilizing.

4 I I '5' i v Z7 3 i j 1 33 i m 1 Z0 1 I Z5 Z/ Z6 24 HIGH INTENSITY SURGICAL LIGHT STATEMENTOF INVENTION OBJECT S OF THE INVENTION It is an object of the invention to provide an improved surgical light.

Another object is to provide a light that is simple in construction, economical to manufacture, and simple and efficient to use.

Another object of the invention is to provide a compact high intensity light that may be positioned with minimum obstruction close to the operating site.

Another object is to provide a high intensity surgical light wherein the parts thereof can be sterilized, and therefor handled by the surgeon to directly adjust the light.

Another object is to provide a surgical light and cooling means combination.

DESCRIPTION OF THE DRAWINGS FIG. I is a view of the light according to the invention in use with a surgical table.

FIG. 2 is a view of another embodiment of the surgical light and a stand.

FIG. 3 is a cross-sectional view taken on line 3-3 of FIG. 1.

FIG. 4 is a transverse view taken on line 4-4 of FIG. 3.

DETAILED DESCRIPTION OF THE DRAWINGS Now with more specific reference to the drawings, in the embodiment shown in FIG. 1, a light head 10 is shown supported on an extension are 12 attached to a cooling means 17 which may include a blower or the like. The light head 10 is supported above the surgical table 18, which shows a patient 19 supported thereon at the operating site.

The light head 10 is made up of the housing 29 which is threadably attached to the light support conduit 28 at 30. The conduit 28 is attached to the housing to the cooling means 17 in a similar manner. The housing 29 has a generally cylindrical outer surface over which the adjusting cylinder 20 is telescopically disposed. The adjusting cylinder 20 has two O-ring grooves therein which receive the O-rings 21. These O-rings make sealing engagement with the outer periphery of the housing 29. The filter I may be of a type to filter out the undesirable wavelengths of light from the high intensity lamp l3 and a lens 16 is supported outward of the filter l5 and held in place by a snap washer 31 which holds the lens against the ring spacer 32.

The air conduit 27 is threadably attached to the reflector 14 at 33 and the reflector 14 has an opening therein that receives the grommet 24 through which the electrical wire 23 passes, which attaches to the light socket 25. Obviously the engagement 29 and reflector 14 could be attached to the conduit 28 and the said conduit 27 in any suitable manner other than threading. The socket 25 is held in place by the support 26 having openings therein to allow the passage of air therethrough. The reflector 14 is supported on the housing 29 by means of a spider 34.

The cooling means which may be a blower indicated at 17 shown supported on a wall which may be the ceiling 40, will circulate air through the air conduit 27 down over the bulb 13, in the direction of the arrows and into engagement with the filter 15. The direction of air will then reverse and flow back up through the space between the air conduit 27 and the light support conduit 28 to a space outside the operating room, thereby carrying away heat from the lamp 13.

In the embodiment of the invention shown in FIG. 2, a surgical table 118 supporting a patient 119, at the operating site, with a light head 110 similar to the light head I0, surgical table 18 and the patient 19 shown in the embodiment in FIG. 1.

The light head is supported by the extension am 112 on the stand 111. A cooling means 117 is provided to circulate air through the light head 110 in the same manner as indicated in detail in FIG. 3.

It will be noted that the adjusting cylinder 20, or the entire head may be removed from the housing 29 so that it may be sterilized and thus not contaminate the hand of a person who may adjust it during an operation. It will further be noted that no cooling air passes over the lamp l3. ever comes into engagement with the operating area. To the contrary, the air is drawn from outside the room or from outside the operating area over the lamp bulb and is discharged into the same area from which it was drawn.

The foregoing specification sets forth the invention in its preferred practical forms but the structure shown is capable of modification with in a range of equivalents without departing from the invention which is to be understood is broadly novel as is commensurate with the appended claims.

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. A surgical light comprising,

sealed light head,

a hollow extension arm,

a high intensity light source in said light head,

cooling means for said light source,

said light head having an open end, a line closing said open end,

a conduit for air inside said hollow are communicating with the inside of said head,

and means to circulate air through said hollow arm, around said light source and through said conduit,

said conduit means being concentrically disposed inside said hollow arm.

2. Thelight recited in claim 1 wherein said light head is in the form of a cylinder having an open end and an adjusting cylinder telescopically received on said open end,

a lens supported in said adjusting cylinder, said adjusting cylinder being adapted to be moved on said light head and to be removed and sterilized.

3. The light recited in claim 2 wherein sealing means is provided between said light head and said adjusting cylinder,

said sealing means comprises an O-shaped sealing washer.

4. The light recited in claim 3 wherein said means to circulate air comprises a blower supported on a wall, and said extension arm is attached to said wall and said extension arm extends through said wall whereby air is discharged through said wall and is drawn in from the side of said wall remote from said light.

5. The light recited in claim 4 wherein said wall comprises a ceiling.

6. The light recited in claim 1 wherein a floor-supported stand is provided and said extension arm is attached to said stand.

7. A surgical lamp comprising a cylindrical housing having an open end,

a generally cylindrical reflector concentrically disposed in said housing.

a spider supporting said reflector in the open end of said housing,

an adjusting cylinder telescopically received on said housan O -ring between said housing and said adjusting cylinder,

a lens supported in the end of said adjusting cylinder,

a lamp supported in said reflector,

a hollow extension arm,

means supporting said extension arm over a surgical table,

an air conduit having one end connected to said reflector,

an air-circulating means having an inlet and an outlet,

said outlet of said air-circulating means being connected to said conduit whereby air is circulated through said conduit, over said lamp and out said hollow arm.

8. The lamp recited in claim 7 wherein said air-circulating means is attached to a floor-supported stand.

said surgical table. 10. The lamp recited in claim 9 wherein two spaced said 0- rings are disposed between said housing and said cylinder.

ll. The lamp recited in claim 7 in combination with a surgical table, adapted to support a patient at an operating site,

said lens being disposed adjacent said operating site. 

1. A surgical light comprising, sealed light head, a hollow extension arm, a high intensity light source in said light head, cooling means for said light source, said light head having an open end, a line closing said open end, a conduit for air inside said hollow are communicating with the inside of said head, and means to circulate air through said hollow arm, around said light source and through said conduit, said conduit means being concentrically disposed inside said hollow arm.
 2. The light recited in claim 1 wherein said light head is in the form of a cylinder having an open end and an adjusting cylinder telescopically received on said open end, a lens supported in said adjusting cylinder, said adjusting cylinder being adapted to be moved on said light head and to be removed and sterilized.
 3. The light recited in claim 2 wherein sealing means is provided between said light head and said adjusting cylinder, said sealing means comprises an O-shaped sealing washer.
 4. The light recited in claim 3 wherein said means to circulate air comprises a blower supported on a wall, and said extension arm is attached to said wall and said extension arm extends through said wall whereby air is discharged through said wall and is drawn in from the side of said wall remote from said light.
 5. The light recited in claim 4 wherein said wall comprises a ceiling.
 6. The light recited in claim 1 wherein a floor-supported stand is provided and said extension arm is attached to said stand.
 7. A surgical lamp comprising a cylindrical housing having an open end, a generally cylindrical reflector concentrically disposed in said housing, a spider supporting said reflector in the open end of said housing, an adjusting cylinder telescopically received on said housing, an O-ring between said housing and said adjusting cylinder, a lens supported in the end of said adjusting cylinder, a lamp supported in said reflector, a hollow extension arm, means supporting said extension arm over a surgical table, an air conduit having one end connected to said reflector, an air-circulating means having an inlet and an outlet, said outlet of said air-circulating means being connected to said conduit whereby air is circulated through said conduit, over said lamp and out said hollow arm.
 8. The lamp recited in claim 7 wherein said air-circulating means is attached to a floor-supported stand.
 9. The lamp recited in claim 7 wherein said hollow extension arm is attached to a ceiling over a surgical table, said hollow arm is connEcted to said ceiling to discharge air therethrough, said air-circulating means is connected to admit air from side of said ceiling remote from said table, and to circulate air through said conduit over said lamp and through said hollow arm to the side of said ceiling remote from said surgical table.
 10. The lamp recited in claim 9 wherein two spaced said O-rings are disposed between said housing and said cylinder.
 11. The lamp recited in claim 7 in combination with a surgical table, adapted to support a patient at an operating site, said lens being disposed adjacent said operating site. 